25390 divided by 10 
Our goal is to divide 25390 by 10.

On to step 1:
If we divide 2 by 10, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 10

Step 2:
The number 10 fits into 25 2 times, leaving a remainder of 5.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 5 after subtracting 20 from 25.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 10

Let's proceed to step 3:
53 divided by 10 is 5 with a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 25.0
Subtracting 50 from 53 leaves us with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 10

Step 4:
The number 10 fits into 39 3 times, leaving a remainder of 9.
Record the quotient 3 as the next digit in the result. 
Result so far: 253.0
Subtract 30 from 39 to get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 10

Going ahead to step 5:
The number 10 fits into 90 9 times, leaving a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 2539.0
If we take 90 away from 90, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 6:
10 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 2539.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
10 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 2539.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 2539.0, with a leftover of 0.0.